1)Operator shall comply with the most current revision of the Northwest Notification Policy.
2) Oil-based drilling fluid is to be used only after all fresh water aquifers are covered.
3)Operator shall provide cement coverage from the intermediate casing shoe (7 5/8" FIRST STRING) to a minimum of 200' above the surface casing shoe to provide isolation of all Cretaceous (including Mesaverde Group) oil, gas, and water-bearing sandstone and coalbed formations that are not otherwise covered by surface casing. Verify intermediate casing cement coverage with a cement bond log.
4)Operator acknowledges the proximity of the listed well. Operator agrees to provide mitigation option 4 (per the Statewide Horizontal Offset Policy). This well is not to be hydraulically stimulated other than low volume formation testing such as DFIT.
PARKER UNIT #1A-20 API #103-07583

Form: (02 )40148463811/19/2018

Emissions Mitigation:
If operator decides to produce from this well, green completion techniques need to be implemented and operator shall indicate that their is sufficient pipeline capacity is in place prior to production. Test separators and associated flowlines, sand traps, and emission control systems shall be installed onsite to accommodate green completions techniques. When commercial quantities of salable quality gas are achieved, the gas shall be immediately directed to a sales line or shut in and conserved. If a sales line is unavailable or other conditions prevent placing the gas into a sales line, the operator shall not produce the wells without an approved variance per Rule 805.b.(3)C.
Operator shall follow all requirements of COGCC’s current policy - NOTICE TO OPERATORS, Rule 912. VENTING OR FLARING PRODUCED NATURAL GAS – STATEWIDE, dated January 12, 2016; and to Rule 912. VENTING OR FLARING NATURAL GAS. a. thru e. in regards to venting and flaring.

Form: (02 )40148463811/19/2018

Drilling/Completion Operations:
A closed loop system must be implemented during drilling (as indicated on the Form 2 and Form 2A). All cuttings generated during drilling with oil based mud (OBM) of the horizontal production interval of the well borehole must be segregated from water/bentonite based mud-(WBM-) generated drill cuttings and placed separately on the well pad. All OBM-generated drill cuttings must be kept in tanks/containers, or placed on a lined/bermed portion of the well pad; prior to disposition. The moisture content of any OBM-generated drill cuttings in a tank, cuttings containment area, or pile shall be as low as practicable to prevent accumulation of liquids greater than de minimis amounts. All liners associated with oil-based drilling mud and OBM-generated drill cuttings must be disposed of offsite per CDPHE rules and regulations.
The moisture content of water/bentonite based mud (WBM) generated drill cuttings managed onsite shall be kept as low as practicable to prevent accumulation of liquids greater than de minimis amounts. After drilling and completion operations have been completed, if any of the WBM drill cuttings will remain on the well pad location (cuttings management area, the cut portion of the pad, cuttings trench, dry cuttings drilling pit, or used onsite during reclamation and/or long-term stormwater/erosion controls), they must be sampled and meet the applicable standards of Table 910-1. After the drill cuttings have been amended (if necessary) and meet the levels in Table 910-1, they may be placed on the well pad as need.

COGIS - Best Management Practices

BMPSearch Results -
5 record(s) returned.

Source
Document

BMP Type

BMP

Form: (02 )40148463811/19/2018

Planning

Access Road and Well Pad Planning and Traffic Control:
A. In an effort to minimize disturbance, equipment and vehicles will be confined to the proposed access. Existing roads will be maintained and kept in the same condition as previously approved, with the exception of existing unimproved road segments which will be upgraded if required by landowner agreements. All improved access roads and associated structures will be constructed or reconstructed to the minimum standards of Rio Blanco County and BLM.
B. Reduced Speed Signs will be used where necessary along the proposed access road, particularly at the ninety (90) degree corners on the access road and the portion of the access road where it accesses Highway 64. During the initial planning of the project, Anschutz utilized the following practices to minimize the total disturbance of the project.
i. Where possible, the proposed pad location may be placed near an existing improved access road with only short proposed approaches to the location, if an agreement with the surface owner and / or well pad operator can be reached.
ii. Access road widths were kept to the minimum safe width appropriate for vehicle volume.
iii. Additional wells (if determined to be economical at this location), will be co-located on this well pad to reduce the total number of well pads required.
iv. After drilling and testing of this stratigraphic test borehole has been completed, Anschutz will evaluate whether certain zones (Formations) may be economically produced. Additional wells or horizontal extended laterals may be planned for this wellbore, when possible, to reduce the total number of wells drilled within a lease as well as the total number of pads and associated access, thereby reducing overall surface disturbances.

Form: (02 )40148463811/19/2018

General Housekeeping

General Housekeeping and Handling Waste:
A. This Well will be drilled using a closed loop system.
i. Anschutz plans on using both freshwater and Oil Based Mud (OBM) systems to drill the wells.
B. A third-party service company will be contracted to manage, treat, and dispose of all drilling related wastes associated with proposed wells.
C. As the drill cuttings move off the shaker, they will be properly screened, chemically treated with a drying agent, and placed into metal storage containers. The containers are then hauled off by a third-party service company.
D. There will not be a reserve pit on proposed pads. Drilling fluids will be hauled and disposed of at a commercial disposal facility.
i. Upon completion of drilling operations, any remaining oil-based mud (OBM) fluids would be removed from the well location and either recycled into the OBM system on a subsequent well or disposed of at a commercial disposal facility that can accept oil-based drilling fluids (the exact facility will depend on proximity and availability to accept such fluids in a timely manner).
E. At any given time, Anschutz proposes to truck waste from flowback fluids, completion/stimulation frac waters, and produced water to one or more commercially permitted disposal well(s) and or evaporation ponds (the exact facility will depend on proximity and availability to accept such fluids in a timely manner).
F. No trash will be buried on location. A covered, bear-proof, trash container will be on site during all drilling/completion operations to contain trash, and this will be hauled off location to an approved landfill within the timeframe outlined in COGCC’s rules and regulations, but no longer than thirty (30) days after completion or shutting-in of the proposed well (if not brought on to production status).
G. A portable, self-contained chemical toilet will be provided for human waste disposal during drilling and completion operations. Upon completion of operations, or as required, the toilet holding tank will be pumped and the contents disposed of in an approved sewage disposal facility. It will be removed within ten (10) days following well completion or any future workover operations.

Form: (02 )40148463811/19/2018

Storm Water/Erosion Control

Storm Water / Erosion Control:
A. Temporary controls may be used in conjunction with permanent controls around draws, or at locations where erosion hazards are high. BMPs will be used as designed for the specific areas to reduce any migration of soils onto and off of site. Energy dissipating controls will be installed at culverts and other areas that have the potential for increasing the concentration of water volume and velocity that could increase erosion.
B. Drainage dips, ditch relief culverts, and water wings, when used, will be spaced and placed to divert water flow off the graded rights-of-way onto well-vegetated areas with low erosion potential.
C. Non-structural Practices Spoils excavated will be stored in a manner to prevent displacement. Wattles or other adequate erosion control practices will be implemented around the spoils to minimize erosion. Interim stabilization controls will be used throughout construction and after construction until a permanent vegetative cover is in place. All Best Management Practices (BMPs) employed will be designed to withstand a twenty-five (25) year weather event. The type and frequency of BMPs used will be determined by slope, topography, soil types, vegetation and potential of runoff from adjacent areas that could affect the overall performance of the controls. Structural Practices-Surface water diversion ditches, when used, will be constructed above and below the disturbed area to intercept water. Diversion ditches will be designed to discharge runoff into well vegetated areas or locations with a low erosion potential. Water bars or wings, when used, will be spaced and placed to divert water flow off disturbed areas and onto well-vegetated areas. Temporary controls may be used in conjunction with permanent controls around spoil piles, draws, or at locations where erosion hazards are high. BMPs will be used as designed for the specific areas to reduce any migration of soils off site. Energy dissipating controls will be installed at culverts and other areas that have the potential for increasing the concentration of water volume and velocity that could increase erosion.
D. Due to this location being within a Zone A Floodplain (based on the National Flood Insurance Program, Flood Insurance Rate Map [FIRM] for Unincorporated Areas of Rio Blanco County; Panel 325 of 975; Community-Panel Number 080288 325A, Dated February 16, 1990), Anschutz will Operator must ensure that the well pad is constructed with sufficient secondary containment for any volume of fluids contained at the well site during drilling and completion operations.
i. These may include, but are not limited to, construction of a berm or diversion dike, diversion/collection trenches within and/or outside of berms/dikes, site grading, or other comparable measures sufficiently protective of nearby surface water. Any berm constructed at the well pad location will be stabilized, inspected at regular intervals as required by CDPHE (at least every 14 days and after precipitation events), and maintained in good condition.
ii. The design/build of any perimeter berm or fluid management structure shall be sized, constructed, and compacted sufficiently to contain and/or manage potential fluid releases during operations in a manner that prevents or controls potential sedimentation and scouring on adjacent lands and drainages. Such design/build of perimeter berms or fluid management structures may include, but are not limited to the following: on location berms; diversion ditches; down gradient baffles intended to slow and control water flow and sediment; enhanced vegetation; or other design features necessary to achieve the goal of protecting adjacent lands and drainages from potential sedimentation and scouring.
iii. The location is adjacent (immediately to the west-southwest) to an area of moderate to high run-on/run-off potential; therefore substantial stormwater BMPs will be implemented; prior to, during, and after construction, as well as during drilling and production operations; at this location to insure compliance with CDPHE and COGCC requirements and to prevent any stormwater run-on and /or stormwater run-off.
E. Rat and mouse holes will be backfilled on release of the completion rig from the location. Backfilling, leveling and re-contouring are planned as soon as reasonably possible following drilling and completion operations. Fill slopes will be smoothed and reshaped to near pre-disturbed conditions to match the native contour. Fill slopes will be restored to cuts and blended or reshaped into large natural berms that provided visual and storm water benefits. If damage to reclaimed areas occurs as a result of well operations and maintenance, including work over operations, affected areas will be reclaimed again following operations.

Form: (02 )40148463811/19/2018

Construction

Construction:
A. Construction activity may be restricted due to weather, wildlife stipulations, or constraints placed on the leaseholder in the area by federal and/or state agencies. Pad and road construction is usually completed within a short time frame with permanent controls installed once the construction activities are completed.
B. Construction Specifications
i. The areas to be excavated or occupied by fill material, shall initially be cleared and grubbed of all vegetation, boulders, and debris. All such material will be disposed of by stacking, piling, windrowing, removal from site, or other approved methods. After removal of bulk surficial materials, the operator shall separate and store the topsoil horizon or the top six (6) inches, whichever is deeper, and mark or document stockpile locations to facilitate subsequent reclamation.
ii. Clearing of vegetation should be kept to the minimum necessary for construction plus the installation of sediment controls. The areas to be excavated or occupied by fill shall initially be cleared and grubbed of all vegetation, boulders, and debris. All such material will be disposed of by stacking, piling, windrowing, removal from site, or other approved methods. After removal of bulk surficial materials, the operator shall separate and store the topsoil horizon or the top six (6) inches, whichever is deeper, and mark or document stockpile locations to facilitate subsequent reclamation.
C. Site Stabilization During Construction
i. Controls such as roughening, seeding, and re-vegetation practices will be used to stabilized berms, cut and fill slopes, and other disturbed areas on location. The designated seed mix may be drilled into berms, cut and fill slopes, and other disturbed areas to maximize the potential for germination. The berms, cut and fill slopes, and any other disturbed areas will be monitored to ensure slope stabilization.
ii. Waterways of the state will be protected with barriers of vegetation, berms, diversion trenches, rock and straw wattles, silt fences, or other CDPHE and CDOT recommended/established techniques to prevent disturbed soils from migrating off site.
Waterways of the state will be protected with barriers of vegetation, berms, diversion trenches, rock and straw wattles, silt fences, or other CDPHE and CDOT recommended/established techniques to prevent disturbed soils from migrating off site.
iii. Fill material will be placed in compacted lifts or layers over the length of the fill. Each lift shall be compacted by compaction equipment such as a sheep’s foot or pad roller, with compaction to visible non-movement of the embankment material. Compaction efforts shall not exceed optimum moisture limits. Each lift shall be adequately compacted before beginning the next lift.

Form: (02 )40148463811/19/2018

Drilling/Completion Operations

Rule 317.p – Requirements to log well:
Open-hole resistivity log with gamma-ray will be run from TD into the surface casing. A Cement Bond Log (CBL) with gamma-ray will be run on production casing, or on intermediate casing if a production liner is run. The Form 5, Completion Report, will list all logs run and have those logs attached.